脈沖展開 的英文怎麼說

After the section of right side nxiits in budgerigar in the original sound wave ' s expanded time window, the higher amplitude pulse and the lower amplitude pulse exchanged alternately and also the higher amplitude is approximately as twice as the lower amplitude

虎皮鸚鵡在斷右側nxllts后，原始時間波形展開圖中出現了各脈沖振幅一高一低相間的交替更換，且高振幅脈沖的振幅約為低振幅脈沖的兩倍。

This paper presents a method that chopping wave is done by switch devices which consist of three - level resistance regulating module and intelligence power module ipm, and which realizes constant - current discharge of storage battery. to achieve the intelligence control of the drive protection and the discharge process of ipm, the paper designs circuit formed by igbt threshold drive pulse pwm signals. ipm fault - blocking protection circuit and microcomputer 80c196. the devices can accurately control the 0 ~ 150a discharge current and the discharge time of the storage battery and calculate the releasing power

實現蓄電池恆流放電過程智能控制是蓄電池放電裝置發展的必然趨，本文提出了一種通過三極電阻調節模塊和由智能功率模塊ipm為開關器件進行斬波從而實現蓄電池恆流放電的方法。為達到對ipm的驅動保護和放電過程的智能控制，文中設計了igbt門極驅動脈沖pwm信號形成電路和ipm故障封鎖保護電路及由單片機80c196為核心的微機控制器。本裝置能夠對蓄電池進行0 150a放電電流及放電時間的精確控制及釋放容量的計算。

In chapter 2, the pcss are manufactured and two technics are introduced. the practical flow is given. meanwhile the linear operational mode and nonlinear operational mode of pcss are analyzed in chapter 3, after simulating time - space distribution of electron and hole in photoconductor, the relations of laser energy, laser character and photoconduction are analyzed and the fundamental principles of nonlinear phenomenon is introduced

在第一章中，介紹了本論文的研究背景，簡要回顧了超寬帶光導脈沖源的發展歷史，同時概括了本論文的主要工作。在第二章中，介紹了光導開關的製作及工作原理，詳細闡述了實際的加工流程，並分析了其線性和非線性兩種工作模式。

This paper starts the research of the liquid floated pendulous accelerometer testing system according to the engineering. at first, this paper gives the brief introduction of the history and present status of accelerometer and its testing technology, the working principium and math model of the liquid floated pendu - lous accelerometer, and then, decides the binary width pulse force retrim loop as the design proposal of testing system, researches the transfer function of every part in the system emphasizly, analyses the stability of the whole accelerometer testing system from the angle of control theoretics by the open loop transfer function of system, and designed the correcting net, analyses the basal problems such as resolution, sampling restraint, precision and so on, designs the hardware testing circuits such as preamplification, band - pass filter, alternating amplifier, phase sensitive demodulatorn, pulse - width modulation, frequency scale circuit, moment current generator. finally, using the graphics program language labv - iew which is designed for testing field especially by ni accomplishes the solfware design of testing system, realized the testing functions

首先對加速度計及其測試技術的發展歷史和現狀，液浮擺式加速度計的工作原理和數學模型等作了簡要的介紹，然後確定了以二元調寬脈沖再平衡測試迴路為設計方案，並從控制理論的角度進行了分析，著重研究了系統中各部分的傳遞函數，利用系統開環傳遞函數分析了系統的穩定性，同時設計了系統的校正網路;分析了二元調寬脈沖再平衡測試迴路的解析度、采樣約束以及測試精度等基本問題，並按照系統分析的結果設計了包括前置放大、帶通濾波、交流放大、相敏解調、脈寬調制、頻標電路以及力矩電流發生器等測試系統各部分硬體電路，驗證了電路的正確性，最後按照測試系統的要求，採用了美國ni公司專為測試領域所開發的虛擬儀器工具? ? labview作為測試軟體開發工具，利用該圖形化編程語言完成了測試系統軟體部分的設計，實現了測試功能。

It can directly read data of mechanical meters immediately without counting pulse. it realizes remote valve control and extensible prepay function. its data transmission is based on international popular standard m - bus for all types of consumption meters, characterized by reliability, convenience, opening

特點：直接讀取表計的機械讀數，無需累計脈沖，僅在抄表瞬間加電工作；可實現遠程閥控；可擴展預付費功能；數據傳輸採用消費類儀?國際通行標準m - bus ，可靠、方便、開放。

Biology and chemislry etal ln thi s dissertation, the theory of femto - second pulse laser amplifier system using tifsapphire crystal was discussed systematically and many methods were brought fonvard to resoive the probably existed problems in each part of the system base d on the achieved results, experimentai works has further developed

本文系統給出了以鈦寶石晶體做為增益介質和放大介質的飛秒激光脈沖放大系統理論，針對各部分可能出現的問題提出了相應的解決方法，並在此基礎上開展了部分實驗工作。

2 、 the influence to the quality of array ccd camera under the irradiation of cw and pulse laser was investigated experimentally. the result of experiment shows that the ccd easily damaged by pulse laser to cw laser. the thresholds of ka - 320 model ccd saturation and sub - damage were measured

2 、系統地開展了脈沖與連續激光干擾面陣ccd光電探測器實驗，實驗證實：與連續激光相比，脈沖激光僅需較低的能量即可將ccd破壞，得到在破壞面陣ccd探測器方面脈沖激光優于連續激光的結論。

In this dissertation, radar detection in hrr has been taken as background. the followings are main contents of this dissertation : ( 1 ) based on analyzing the targets and the clutter ’ s specific characteristics of hrr radar, the echo models of targets and clutter have been studied respectively ; the changes of targets ’ echoes in different elevation angles, azimuth angles and attitude angles have been analyzed ; then, the echo models of lfm radar clutter have been established

本文針對高距離分辨雷達目標檢測開展研究，主要完成了以下幾方面的工作: （ 1 ）分析了高距離分辨雷達目標和雜波回波特徵，在此基礎上分別研究了高距離分辨雷達目標和雜波的回波模型，分析了不同俯仰角、不同方位角以及不同姿態下目標回波模型的變化，並建立了線性調頻脈沖壓縮雷達的雜波模型。

For example, one of us ( umstadter ) has demonstrated electron beams of a few million electron - volts whose “ brightness ” ( in essence, the concentration of particles in the beam ) exceeds that of beams made by conventional accelerators, mainly because the charges bunched in one pulse of the beam have less time to blow it apart by its own electrostatic forces

例如烏姆斯塔特（本文作者之一）便曾展示過，具有數百萬電子伏特的電子線束之亮度（基本上，即是線束內的粒子濃度）超過了傳統加速器產生的線束，因為脈沖內束在一起的電荷根本沒時間以自身的靜電把別人擠開。

Secondly, two applications of gpml abc in modeling pulse radar are shown : one is detecting pipeline underground, and the other is its application to highway technology. thirdly, with back - projection algorithm, we have formed the image of tree - trunks. in summary, the application of fdtd in uwb fopen so far is impressive

然後，對適用於有耗媒質的gpml邊界條件的應用開展了深入研究，對脈沖雷達探測地下管道和測量高速公路瀝青層厚度進行了fdtd演算法模擬。

The research on the radiation effects of materials induced by high - energy proton irradiation is of important significance in many scientific fields, such as the single event effects of semiconductor components exposed on space, accelerator - driven nuclear energy generator, tritium production by accelerator, intense pulsed ion beam technology, proton radiography, etc. the effects and mechanisms of irradiation vary vastly for different energies and intensities of proton beams

宇宙高能質子的單粒子效應（ see ）研究、潔靜核能系統（ ads ）研究、加速器產氚計劃（ apt ） 、強脈沖離子束（ ipib ）技術、質子斷層掃描等領域都涉及質子輻射效應問題。質子輻射對不同的材料會導致不同的效應，開展質子輻射效應產生的機制研究，掌握其效應規律，對于電子學元器件的抗輻射加固指標提出，以及在其他研究中的方案設計等都有重要意義。

As compared with multi - channel analyzer, platform of microcomputer consumes much more energy, thereby, it will follow a rational line to be research and developing orientation of nuclear spectrum apparatus to choose new pattern platform of microcomputer of low power and develop tiny pattern and low power nuclear spectrum apparatus

對于基於臺式機和筆記本平臺的多道脈沖幅度分析器，微機平臺功耗很大。因此選用新型低功耗微機平臺，開發小型、低功耗的核能譜儀，成為今後核能譜儀的研究發展方向。

In this thesis, the research on short - range high accuracy range finding system, which is inexpensive and compact, is done. to design the laser transmitter and the timing circuit is the main task

本文旨在針對成本低、體積小的高精度短程激光測距系統開展研究工作，主要任務是設計與實現脈沖激光測距系統中激光發射器電路和計時電路。

The new requirements for applications in material surface engineering urge a new type of hipib apparatus, for instance, the generation of medium - power - density ion beam, high - stability ion beams and long - lifetime ion source etc. therefore, characterization of high power ion diode - magnetically insulated ion diode ( mid ), the key issue for the technique development, is considered in this dissertation. the investigations of hipib generation and its mechanisms have been carried out in a temp - 6 hipib apparatus, in order to optimize the configuration of ion diode and its ion beam parameters for materials surface treatments

針對強流脈沖離子束（ hipib ）技術研發的關鍵環節?高功率離子二極體（磁絕緣離子二極體）的工作特性，在temp - 6型hipib裝置上開展了hipib產生及其形成機理的實驗研究，確定了優化的離子二極體結構和輻照工藝參數；通過hipib輻照金屬材料燒蝕行為的系統研究，揭示了燒蝕表面形貌的形成規律，為徹底弄清hipib與材料相互作用機理提供了實驗依據。

Firstly, the paper, combining the characteristic of synchronous pulse bursts and inhibition with the modified pcnn model, presents a way of finding the foveation points in the images adaptively and effectively, and simulates the human vision system. secondly, pcnn is extended to pcnns, based on the properties of information couple and transmission, an algorithm that is used to fuse images of the same target got by several sensors to an image is presented to simulate the human vision system. thirdly, combining the properties of synchronous pulse bursts, capture, and transmission and competition of waves, the paper presents two ways of classification, one is an algorithm based on the properties of neuron to capture and inhibit to classify the data taking on any complex unlinear distribution robustly, the other is based on the restricted distance and modified of the former to remove the influence of inferior samples in classification ; fin ally, based on the accumulative difference pictures, and the forming and transmission of pcnn wave, selecting and controlling the direction of autowave by connecting the neighbouring neurons selectively, the paper presents a way to simulate the tracks of moving object and detect the moving direction

首先結合pcnn的同步脈沖發放和側抑制特性，提出了基於改進型pcnn的圖像凹點檢測演算法，該演算法是一種自適應而有效的圖像凹點檢測方法，並且較好地模擬了人類視覺系統；然後，結合信息傳遞和信息耦合特性，將pcnn擴展成pcnns （ pcnn網路群） ，提出了一種基於pcnns的圖像融合演算法，能夠將多個傳感器獲取的同一目標的圖像信息融合到一幅圖像中，有效模擬了人類視覺系統；另外，結合pcnn的同步脈沖發放特性、捕獲特性和波的傳播競爭特性，開拓地將pcnn用於模式分類中，提出了基於耦合神經元點火捕獲抑制特性的分類方法和改進的約束距離下的pcnn分類方法，前者可實現對樣本空間中任意復雜分佈訓練樣本的穩健非線性分類，而後者能夠消除訓練樣本中刺點對分類的影響；最後，結合累積差分圖像思想、 pcnn波的形成與傳播特性，通過各神經元之間連接取向來選擇與控制自動波的流向，將pcnn用於運動視覺分析中的運動軌跡模擬及運動方向檢測。

The study on fast neutron physics and relative technique of experiment and data analysis made at a pulsed neutron generator in beijing normal university during recent yeras is introduced

摘要綜述近年來在北師大低能所的國內第一臺脈沖化高壓倍加器上開展的快中子物理，及有關的實驗和數據處理技術研究。

The main topic of this thesis is to deposit the lacamno3 films using the pulsed laser deposition ( pld ) technique, and to improve the properties of the films through a serials of processes including the post annealing treatments. at last, the relation between the physical properties and the film making processes of the materials are discussed and some possible applications explored

本論文的任務就是利用脈沖激光沉積lacamno _ 3薄膜，並通過退火等一系列工藝處理提高薄膜性質，最終製作測輻射熱儀的敏感元件，同時也對材料的物性展開討論，以探尋更多的應用。

Solid laser pumped by semiconductor laser has the advantages of laser diode and solid laser, so it develops rapidly in recent years and gets the extensive application in the fields of military, communication, processing and scientific research, etc. in order to meet the demands for laser power of semiconductor solid laser pump solid yag laser, i synthetically adopt the singlechip digital automatic control technology which is extensively used in the intelligent instruments, products of electromechanical integration and automatic control system, lcd technology, pc switch technology and steady voltage, invariable current technology

半導體激光泵浦的固體激光器由於兼有了激光二極體和固體激光器的雙重優點，近年來得到迅速發展，並在軍事、通訊、加工和科研等領域中得到廣泛的應用。本文針對半導體固體激光器泵浦固體yag激光器系統對激光電源的要求，並且綜合運用了當前在智能儀表、機電一體化產品、自動控制系統中應用廣泛的單片機數字化自動控制技術、 lcd顯示技術、 pc開關技術及穩壓、恆流技術，研製了脈沖半導體激光電源。

A dfdl model including gain saturation effects is developed and this model is used to study the fluctuation of the pulse width theoretically, which is identical to the experiments. in order for ps pulse amplification, the saturation fluence for krf at 10 ps and gain of the discharge krf laser are monitored. 4

開展了10pskrf激光在空氣中的傳輸實驗研究，計算了自導引區內的閾值光強，觀測到光束自聚焦和自導引現象，測量了自導引區域內的等離子體密度，並對激光脈沖的傳輸演化進行了分析。

Based on the theory mode, the delay time between the beginning of optical illumination and the onset of lock - on switching was calculated, and the transiting speed of electrons, the traversing velocity of the current filament, was obtained as well. the calculated results matched well the experimental results. taking advantage of the ultra - fast response characteristics of the devices, si - gaas pcss ' s are successfully applied to the broadening test of nanosecond laser pulses

應用單極電荷疇模型數值計算了lock - on效應的光、電時間延遲和載流子的渡西安理工大學碩士學位論文越速度（絲狀電流穿越開關間隙的速度） ，所得計算結果與實驗測試結果基本吻a利川半絕緣gaas光屯導開關的超快光l匕11向應燈性，成功地應川下納秒激光脈沖展寬試驗中，證明了開關可廠泛應川在超快光電響應和光電反饋網路中。